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cje ›› 1990, Vol. ›› Issue (6): 53-55.

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A Mathematical Note for the Law of Tolerance

Yang Fengxiang, Wang Shunqing   

  1. Department of Mathematics, Lanzhou University
  • Received:1989-05-22 Online:1990-12-10

Abstract: The Law of Tolerance about the integrative actions of environmental factors is described in this paper.Mathematical methods are used to explain and picture it;and mathematical notesare also given to the Principle of Limiting Factors and the Law of the Minimum.

Key words: Ricinus communis, extract, Meloidogyne incognita, nematocidal activity